I tie hook direct to staging about foot(your choice length)of tarred line then a Swivel tied to main line.I normally carry a few baggies full tied (stagings) and ready to go or make as I need only takes a couple minutes.Like said above a good fish can wreck a snap swivel..There are some offshore brands that will hold up but price prohibitive. I seldome use Trotlines matter of fact I seldom use more than 1 hook per line.mainly for Safety reasons ( I had to dig out a few hooks out of me and others in my day)I use limb lines,throw lines,noodles almost exclusively..Catch as many fish just more stops..